Special Containment Procedures: SCP-886-A-alpha and SCP-886-A-03 are to be kept in dedicated humanoid containment suites at Bio-Site 66 and allowed nutritious rations three times daily.

SCP-886-B-2-01 through SCP-886-B-2-03 are to be kept in Containment Chamber 886-Delta, designed as an appropriate climate-controlled indoor paddock on-site and provided with appropriate feed.

Additional members of SCP-886 may be bred if appropriate reasons for research are presented. If research is not being undertaken, offspring of both SCP-886-A and SCP-886-B are to be destroyed immediately after birth.

Description: SCP-886 is the collective designation of unique mammals capable of cyclic asexual reproduction. SCP-886-A are identical human females (Homo sapiens) of Irish descent and SCP-886-B are identical female domestic Irish goats (Capra aegagrus hircus). Members of SCP-886-A and 886-B develop and behave as expected of ordinary individuals of their species, and are completely ordinary outside their shared anomaly.

SCP-886-A-alpha is the oldest and presumably original instance of SCP-886-A. SCP-886-A is a human female, age 37, of average intelligence and stature. Once a year during the spring, SCP-886-A-alpha will spontaneously become pregnant and carry twin instances of SCP-886-B to term. Gestation mirrors that of a standard goat, averaging between 140-160 days.

Instances of SCP-886-B will be female, with white fur and of average size. SCP-886-B are friendly and notably docile, having never displayed any form of aggression towards humans during containment. The milk and meat of SCP-886-B may be consumed safely; the anomaly does not appear to be infectious.

At the age of two and a half years, each specimen of SCP-886-B will spontaneously become pregnant, each with a single human infant. Infants born of SCP-886-B are genetically identical to SCP-886-A-alpha, designated SCP-886-A-XX. SCP-886-A-XX will develop as normal human females until age 15, when they will begin to exhibit the anomaly in the fashion previously described.

SCP-886-A-alpha does not know how or why she began to exhibit her anomaly, only that it began suddenly and without warning.

Addendum - Recovery of SCP-886: SCP-886-A-alpha was discovered by embedded Agent Donelly when a local newspaper released a story regarding her anomalous pregnancy in a weekend column. A cover story revealing the column as a piece of short fiction was released and associated civilians were altered appropriately.

A task force was called to the area and SCP-886-A-alpha was extracted under the guise of a car accident. Family and friends are being monitored for further anomalies, with special attention paid to the subject’s sisters and daughter.